Pressure-regulator



Patented Oct. I8, |898. F. A. DALEY.

PRESSURE REGULATOR. (Application filed Mar. 5, 1897.)

3 sheets-sheet l.

(No Model.)

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No. 6|2,800. Patented Oct. I8, |898.

F. A. DALEY.

PRESSURE REGULATOR.

(Apph t n filed. Mar 5 1897) 3 Sheets-Sheet 2..

v (No Model.)

15a/euml? No. alzuo. Patented ont. I8, |898. F. A. DALEY.

PRESSURE REGULATOR.

(Application Bled las. 5, 1897.)

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lINITED STATES PATENT OEEICE.

FRED A. DALEY, F ROSLINDALE, MASSACHUSETTS.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 612,800, dated October 18, 1898.

Application led March 5, 1897.

To @ZZ whom, it may concern.' Y

Be it known that I, FRED A. DALEY, of Roslindale, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Pressure-Regnlators, of which the following is a description sniiiciently full, clear, and exact to enable those skilled in the art to which it appertains or with which it is most nearly connected to make and use the same.

This invention has relation to means for controlling or regulating the pressure of iiuids-snch as steam, air, or other gasgenerated or employed for power purposes in the mechanical arts.

It is the object of the invention to produce such improvements in contrivances of the kind mentioned as will render the same sensitive in an extreme degree to force and render them certain of and efficient in operation to a maximum extent in such relationships and connections as they may he capable of being used.

It is also the object of the invention to provide a pressure-regulator of the general nature and design hereinafter mentioned which shall be as simple in construction as is possible with the highest scale of usefulness, and consequently reduce the cost of manufacture to a minimum extent.

It is also the object of the invention to provide such improvements in pressure-regulators of the functional capabilities of that to which the present invention relates as will bring the same into small compass to assist in rendering them ready and convenient of application and use.

To these ends my invention consist-s of an improvement in fluid-pressure regulators or controllers, the prime operating means of which is a reciprocatory piston, which is actuated or moved by the pressure of the fluid in front and rear of the same, the fluid being controlled by a reciprocatory piston-valve moved in one direction by mechanical means, such as a spring or its equivalent,and in the opposite direction by the force of the fluid which it governs, conduits and ports of special construction, location, and arrangement being employed in connection therewith, which ports communicate with a cylinder provided with the aforesaid piston, so as to move the Serial No. 625,948. (No model.)

The invention also consists of improvements of greater or less importance in connection with the foregoing, all as I will now proceed to describe in detail, and point out with particularity in the appended claims.

Reference is to be had to the annexed drawings, and to the letters of reference marked thereon, forming a part of this specification, the same letters designating the same parts or features,` as the case may be, wherever they occur. f Of the said drawings, Figure 1 is a side elevation of the invention of such form as I have chosen to give it in order to explain its mode of operation. Fig. 2 is a left-hand end view of the same. Fig. B is a plan or top view of the same. Fig. 4 is a longitudinal vertical central sectional view of the invention as it is shown in Fig. l. Fig. 5 is a transverse sectional View taken on the line 5 5 of Fig. 4. Fig. 6 is a horizontal sectional view taken through the center of the valve and its casing or cylinder. Fig. 7 is a side elevation of an air-pumping device having my improvement applied thereto in order to regulate the pressure of the air controlled by the pump.

In the drawings, A designates a casting, which forms the attaching bracket or base c, the piston-cylinder l), and the valve-cylinder c, as well as a support for the several parts of the complete' invention. These, it is obvious, maybe changed in form and design to suit special circumstances.

d is the piston in the cylinder h, from which piston there extends a rod c through a stuffing-box f, the said rod being adapted to be connected with any means which it is the purpose and capability of the invention to actuate or regulate or control-as, for instance, with a belt-shippin g bar 2. (See Fig. 7.) The manner of connecting the rod e with the means which it may be adapted to control other than that shown will depend, of course, on the relative positions, design, or structural character of the two devices. However, this can be accomplished by any mechanic of ordinary skill, and it is deemed unnecessary to illustrate it herein.

g is a reciprocatory valve arranged in the valve-cylinder c, so as that it may be moved longitudinally therein. The valve is provided with an extension or stem h, Which projects through a stuffing-box t' in one end of the valve-cylinder, and the said stem is provided on its outer end with rack-teethj, which are engaged by the teeth of a pvoted segment k. A rod is pivoted at one of its ends to the segment 7c and is operated upon at the other end by a spring m, which, through the medium of the rod, the segment, and the valverod, serves to hold the valve pressed into the valve-cylinder c in the position in which it is represented in Figs. 4 and 6.

n designates a pipe connected with the valve-cylinder at the end opposite that from which the stem 7L extends, which pipe is adapted to admit steam, compressed air, or other gas or iluid under pressure (which pressure it is desired to regulate, as aforesaid) into the Valve-cylinder through a port o, formed in the stuffing-box p, against the end c2 of the valve g, with a tendency to press and move the Valve outward from its normal position or in the direction of the arrow, Fig. 6, against the tension or stress of the spring m.

The valve-cylinder is provided With a lony gitudinal port q, communicating between the port o or end c2 of the valve7 and an annular space p, surrounding the valve and made by turning doWn the latter to a slight extent, as is clearly shown in Figs. 4, 5, and 6.

Ports s and s are formed in the piston-cylinder, so as to communicate with the opposite ends of the latter and With nearly the central portion of the valve-cylinder, and adjustable plug-valves and t' are provided for the purpose of regulating the area or extent ol' opening of the ports s s'.

A longitudinal exhaust-port u is formed centrally partially through the valve from its outer end and through its stem, and communicating with the said central port u are the radial ports c v', extending to the outer surface of the valve.

The construction and arrangement are such that When the valve is relieved of pressure or When the pressure` thereagainst is lowr the spring m will operate to move the valve inward to normal position, and Whatever pressure there may be against the head of the valve and piston and port p', as seen in Fig. 6, will escape through the port s' and serve to keep the piston back, as shown in Fig. 4, and fluid in the said cylinder in the rear of the piston escaping through the ports s fu u. When the pressure against the head of the valve becomes so great as to overcome the tensionspring m, the valve Will be moved back, cutting o the fluid-pressure through the ports o Q19 s', and when the valve or valve-piston has been pressed so far back as to bring the annular port p into registration or communication With the port s the pressure will be against the rear of the piston, passing through the ports p', r, and s, and the escape of pressure in front of the piston Will be through the ports s', c, and u.

The controlling plug-valves tt' Will be regulated as to position to control the movement of the piston, so that it may be operated Without shock or undue suddenness.

The thing operated upon to control the pressure will, as before stated, be connected With the piston-rod e. Should the invention be employed as a damper-regulator, it Will be understood that when the piston moves in one direction the damper will be closed and When it moves in the opposite direction it will be opened. The invention is not, however, conned to any special use.

In order to prevent any binding operation in the movement of the valve, l may arrange the same upon ball-bearings w, as shown, and as many balls and raceways upon which the same may travel may be used as may be considered necessary.

In Fig. 7 I have shown the invention as employed to control an air-pump Vhen the pressure is low and the pump is running, as it Will be by reason of the belt4 running over the tight pulley 5, the parts will be in the po sition in which they are shown in said Fig. '7. Then the air-pressure through the pipe n is increased, the piston-stem e Will be moved, thereby moving the belt-shipping bar 2, so as to ship the belt from the tight pulley 5 to the loose pulley 6 and so stop the operation of the pump 3. This is given merely as a suggestion of the various uses that maybe made of the invention.

Having thus explained the nature of the invention and described a Way of constructing and using the same, though Without attempting to set forth all of the forms in which it may loe made or all of the modes of its use, it is declared that What is claimed isl. A pressure-regulator comprising in its construction the piston and piston-cylinder provided With ports for permitting the discharge -of the fluid from in front and in the rear of the piston; a valve-piston cylinder and reciprocating valve-piston having the central port u therein; radial ports c n and an annular port in the valve adapted to be brought into communication With the ports in the piston-cylinder; and a port in the valve cylinder or casing communicating with the fluid-admitting end of the valve-cylinder and the annularport'of the valve.

2. A pressure-regulator comprising in its construction the piston and piston-cylinder provided With ports for permitting the discharge of the iuid from in front and in the rear of the piston; a valve-piston cylinder and reciprocating valvepiston having the central port u therein; radial ports c c and an annular port in the valve adapted to be brought into communication With the ports IOO in the piston-cylinder; anda portin the valve cylinder or casing communicating with the fluid-admitting end of the valve-cylinder and the annular port of the valve, combined with a spring and operative connections between it and the valve to move the latter in one direction Awhile the duid-pressure is controlled to move it in the opposite direction.

3. A pressure-regulator comprising in its construction the piston and piston-cylinder provided with ports for permitting the discharge of the fluid from in front and in the rear of the piston; a valve-piston cylinder and reciprocating valve-piston having a central port, u therein; radial ports and an annular port in the valve communicating with the ports in the piston-cylinder; and a port in the valve cylinder or casing communicating with the fluid-admitting end of the valvecylinder and the annular port of the valve, combined with a valve-stein connected with the valve and constructed as a rack; a pivoted toothed segment engaging the said rack; a spring acting upon the said segment to move the valve-stem and valve in one direction, while the Huid-pressure is controlled to move it in the opposite direction.

4. A means for controllingthe iuid of a pressure-regulator consisting of a valve cylinder or casing, provided with a port communicatin g between the fluid-entering end of the cylinder and the central part of the same; a reciprocatory valve in the cylinder provided with a central port extending from nearly the end against which the iiuid acts through the opposite end, and with radial ports communicating with the said central port, and also with an external annular port between the said radial ports and means substantially as hereinbefore set forth and explained for restoring the piston-valve after havingi been subjected to pressure.

5. A means for controlling the fluid of a pressure-regulator consisting of a valve cylinder or casing provided with a port communicatin g between the duid-entering end of the cylinder and the central part of the same; a reciprocatory valve in the cylinder provided with a central port extending from nearly the end against which the iiuid acts through the opposite end, and with radial ports communicating with the said central port, and also with an external annular port between the said radial ports, combined with a spring and operative connections between the spring and the valve to move the latter in one direction, the pressure of the Huid against the valve being adapted to inove it in the opposite direction.

G. The combination, with the cylinder provided with ports s s and the piston d, of the valve-cylinder having a port communicating between the fluid-entering end of the cylinder and the central portion thereof, of the piston-valve having the central port u in the valve-cylinder provided with the radial ports n o' and the central outside annular port coinmunicating with the said ports s s of the piston-cylinder, the said piston-valve being provided also with a central discharge-port with which the radial ports communicate.

In testimony whereof I have signed my name to this speciiication, in the presence of two subscribing witnesses, this 25th day of September, A. D. 1896.

FRED A. DALEY.

Witnesses:

ARTHUR W. CRossLEv, GEORGE A. DALEY. 

